← Glossary
Molybdenum Solid Solution Hardening
Molybdenum solid-solution hardening increases high-temperature strength and resistance to tempering due to large molybdenum atoms in the iron lattice. This prevents pore formation and improves the microstructure.
Physical-Chemical Mechanism of Action
Large molybdenum atoms are incorporated into the body-centered cubic iron lattice, impeding the movement of atomic slip planes and thereby increasing strength.
Metallurgical Relevance & Welding Risks
This hardening improves hot strength and prevents porosity, resulting in a stronger and less crack-prone weld. Lack of molybdenum can lead to low strength and more cracks.
Workshop Practice & Action Guidelines
Make sure the steel has enough molybdenum (typically 0.2 to 1.5 %). If molybdenum is missing, hot strength can drop and crack risk goes up. If needed, use filler materials or optimize welding parameters.
MetallurgieSchweißtechnik